Product Description:

The CDB01.1C-ET-ENS-ENS-NNN-NNN-L2-S-NN-FW is a control unit produced by Bosch Rexroth Indramat and belongs to the CDB Control Units series. It acts as the command layer in drive systems, providing signal conditioning, network access, and encoder processing for coordinated axis control. This allows servo amplifiers to receive precise setpoints for motion tasks in automated machinery and supports stable data exchange between connected components.

The module draws a base power of 9 W, a low internal demand that eases cabinet thermal design. Field wiring delivers control signals at a logic level of 24 V while each digital input sinks only 3 mA, so PLC output cards are lightly loaded. Command and diagnostic data flow through a Multi-Ethernet interface, allowing users to select the fieldbus protocol that matches plant standards without changing hardware. Physical connection is through an RJ-45 8-pin jack, and the electronics tolerate an inrush of 6 A when the DC bus charges at power-up. Feedback channels accept incremental or absolute signals, and the filter network limits incoming encoder frequencies to 500 kHz so high-resolution sensors can be used without aliasing.

Once linked to a cell switch, the device negotiates at 100Base-TX speeds, ensuring motion telegrams meet low-latency requirements. A separate service port supports RS-232 cables up to 15 m, and the UART can exchange setup data as fast as 115 kBaud. The ENS encoder interface sources 500 mA to power external transducers and presents 120 ohm termination for differential pairs, keeping line reflections within tolerance. Drive enable sequences are gated by a maximum command pulse width of 60 ms, matching stop-category timing in many machines. For functional safety, the integrated Safe Torque Off channel removes gate signals to the power stage, preventing unintended motion without the need for external contactors.